Improvement in cement pavements



UNITED STATES PATENT QFFIGE.

ISIDOR Moomor BROOKLYN, NEW YORK.

IMPROVEMENT IN CEMENT PAVEMENTS.

Specification forming part of Letters Patent No. 163,506, dated May 18,1875; application filed April 9, 1875.

To all whom it may concern Be it known that I, IsID R MOOK, of Brooklyn,in the county of Kings and State of New York, have invented a certainnew and useful Improvement in Cement Pavement, of which the following isa specification This invention is illustrated in the accompanyingdrawing, in which Figure 1 represents a transverse vertical section.Fig. 2 is a plan or top view, partly in section.

Similar letters indicate corresponding parts.

This invention relates to that class of cement-pavements which are madein sections, each section being formed directly on the ground on whichthe pavement is to be laid.

My invention consists in arranging, between the section of a cementpavement, strips of wood of triangular shape in cross-section, the sidesof which are protected by paper or other suitable material, so that thecement will not adhere to the same, and each section can be lifted upwithout disturbing the adjoining sections.

Each section is provided with a beveled plug of wood, which is embeddedin the cement, and which serves to receive an eye-bolt, for the purposeof raising the desired section with ease and convenience.

1n the drawing, the letter A designates a cement pavement which is madein sections, each section B being formed directly on the ground. Beforethe cement is spread on the ground, however,I form on the ground alayer, 0, of fine sand, dust, or other suitable material, such, forinstance, as tar-paper, so that when the cement is spread thereon itwill be prevented from adhering to the ground, and the injurious effectwhich would otherwise be produced by changes in the ground is avoided.

The sections B are formed. one after the I other, directly on thesub-bed O, and, in formin g the sections, 1 place against their sidesbev- "eled strips, D, of wood which are covered and in each section issecured a pyramidal plug, E, of wood, the surface of said plug beingflush with or slightly beneath the surface of the section in which thesame is secured. If one of the sections becomes injured and requires tobe relaid, or if, from some other reason it is desirable to lift saidsection out, I secure in the plug E an eye-bolt, F, and the operation oflifting the section can be effected Without trouble and without dangerof injur; ing the adjoining sections.

The operation of lifting either of the sections is further facilitatedby the beveled strips D interposed between the scctionsB and coveredwith tar-paper or other equivalent material, so that, in raising one ofthe sections, it is easily separated from the adjoining bev-' eledstrips and from the adjoining sections, and on account of the sub-bed 0each section separates readily from the ground.

By these means a cementavement is obtained, which can be laid with greatcase, which is superior in durability, and which, whenever it becomesnecessary, can readily and cheaply be repaired.

I do not claim as my invention to lay a cement-pavement in detachedsections, formed directly on the ground; neither do I claim theinterposition of tar-paper or equivalent material between the sectionsthus formed, since those features have been already used for some time.

What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the sections of a cement pavement formed directlyon the ground,

the triangular-shaped wood parting-strips D,

W. HAUFF, E. F. KASTENHUBER.

